ᐅ Heat Pump Energy Consumption in 2019 on a Monthly Basis

Created on: 27 Nov 2019 10:44
B
Bookstar
I would like to start a new comparison thread and learn about your energy consumption. I am not completely satisfied with mine.

KFW55
Heated area 200 m2 (2,150 sq ft), underfloor heating
Standard rooms 19°C (66°F), living areas 22°C (72°F), bathroom 23°C (73°F)
Air-to-water heat pump with centralized controlled ventilation system
Domestic hot water temperature 50°C (122°F)


Data collection unfortunately only since April 2019:






























April
407
May
347
June
109
July
131
August
144
September
198
October
356


I will update the table monthly. November will be included soon, with an estimated 650 kWh.
tomtom7927 Nov 2019 12:58
Bookstar schrieb:

That’s a great figure. It shows that there’s no real difference in energy consumption whether you have KfW 70, 55, or 40. It depends much more on the heating system settings than on extreme insulation measures.

I think it’s important to consider that this is a prefabricated house, which usually performs toward the lower end of the scale.

The area is actually 248m2 (2,669 sq ft), and ceiling height also plays a role—we have 2.45m (8 ft) in the basement, 2.65m (8 ft 8 in) on the ground floor, and 2.55m (8 ft 4 in) upstairs.

Energieausweis für Wohngebäude mit End- und Primärenergiebedarf und Farbstufe A+ bis H.


@Ippebson currently, the cost is about 75 euros per month with the heat pump tariff from e-wie einfach.
tomtom7927 Nov 2019 13:00
Lumpi_LE schrieb:

No, it depends on location and consumption behavior, as explained above. In theory, a KfW70 house could be better insulated than a KfW55 house... Your comparison doesn't provide any meaningful information.

By the way, I consume just under 2500 in a KfW55 house... and what does that tell you?

That you live in the Rhine Valley and always sit in the living room with socks on and have a comfort fireplace
B
Bookstar
27 Nov 2019 13:16
Ippebson schrieb:

The estimated consumption will be around 4,500 kWh. What do you pay in total? Around €1,350 per year?

Good luck
Ippebson

I estimate 5,000 kWh, paying 22 cents per kWh, which comes to about €1,100 or roughly €90 per month.

So, gas heating systems are definitely more efficient than these electric heating systems.
L
Lumpi_LE
27 Nov 2019 13:26
tomtom79 schrieb:

So you live in the Rhine Valley and always sit in the living room with socks on and have a comfort fireplace

Nope, completely different region, 22-23°C (72-73°F) indoors and yes, we use the fireplace about 20 times a year.

By the way, you can find plenty of people in threads like this on htd bragging about their KfW55 or sometimes even KfW70 houses consuming only 1000-1500 kWh... That mostly just drives you crazy yourself.
tomtom7927 Nov 2019 13:35
You can’t tell where you live just by looking, so could you share roughly where that is if you don’t mind?

How much does a cubic meter cost for you? These costs should be factored in since 20 times per year is likely, which would probably amount to 200–300€.

We also estimated much lower, but you have to remember that the heated area is large.
T
Tego12
27 Nov 2019 13:35
Just checked: Exactly 2 years in the house, the heat pump has consumed 3250 kWh (hot water plus heating), which is about 1625 kWh per year. At our electricity price of $0.27 per kWh, that amounts to roughly €36.50 per month. No special heat pump tariff, because despite the cheaper electricity rate, the extra meter would make it more expensive.

For the local conditions, I have a smaller house of about 160 m² (1,722 sq ft), plus a horizontal ground collector, meaning geothermal energy, and controlled mechanical ventilation.

Edit: I expect the consumption to decrease a bit more since the initial period in the house required extra energy for "drying" heating.